Paper-crinkling machine



Leoiss Sept., 28 19262.,

W, A. LRENZ PAPAR GRINKLING MACHINE original Filed June 1921 2 sheets-sheet 1 T72 0672507: 7% Zoff/2211 m 5J y Sept. 28 192.6.

w. A. LORENZ PAPAR CRINKLING MACHINE 2 Sheets-heet 2 r f 4 k l Mw I @u www Patented Sept. 28, 1926.

' UNITED STATES PATENT OFFICE.

WILLIAM A. LORENZ, OF HARTFORD, CONNECTICUT, ASSIGNOR TO THEVOTAKA FABRIC COMPANY, OF HARTFORD, CONNECTICUT, A CORPORATION 0F CONNECTICUT.

. PAPER-CRINKLING MACHINE.

Substitute for application Serial No. 475,649, iIed` June 7, 1921.

This application filed July 31, 1925.

- Serial No. 47,359.

This application isa substitute -for abandoned application S. No. 475,649, led June 7 1921-.'

,This invention relates mainly to means for transversely. crinkling a paper web.

It has been customary to crinkle paper by the use of a doctor-blade which strips the paper-web from a cylinder and at the same time crinkles the web. The doctorblade forms an abutment against which the paper is crushed; and it is found necessary to make the paper very moist, and' also to press it firmly against the cylinder, in order that the latter may drive the paper with sufficient force against the doctor-blade. Considerable waste arises from tearing, due to the tenderness of the moist paper, es-

l pecially whenit is thin, as it is easily torn by the doctor-blade in stripping the paper from the cylinder. Moreover, inthe case of very heavy. paper, or paper that is not thoroughly molstened, the work'tends to bulge away from the cylinder before it quite reaches the doctor-blade, and hence the latter cannot fully crinkle the same. lVhen the paper is very moist, it is also open to the objection of the expense of drylng the saine, and the room occupied by the bulky drying apparatus. n

According to the present invention, a palr of feed-rolls is used to advance the paper into a constructed throat formed by opposing plates, which may be so set that the throat is choked b the paper` near the delivery end of the t roat, whereby fresh paper as it is driven into the throat by the,

fee -rolls, becomes transversely crinkled in overcoming the resistance ofthe web to being -forced through the choked passage. Preferably, the plates are relatively adJustable, so that the intake end of uthe throat may be relatively open while the delivery en'd may be relatively closed. Various adjustments of one of the plates may be made, as required for different kinds of crinkling and different kinds of paper.

The foregoing objections are overcome, because the paper is not crinkled by the stripping thereof from a drum to which it adheres, nor until after it has been separated from its feed-roll. The paper 1s evenly crinkled throughout, and does not depend upon moisture and adherence for `driving it, the pair of feeding rolls being efiicient for either moist or dry paper. rlhe paper when plates into peripheral grooves formed in kthe feed-rolls. Each of the sets of guiding tongues may be integral with the plate to which it belongs. The plate on its crinliling side may be flat or unbroken but preferably it is longitudinally grooved, the

grooves coinciding with the spaces between the guiding tongues. The grooving of the plates may have the effect of producing the appearance of longitudinal stripes in the crinkled web, since the crinkling which'occurs` between the uncut portions of the throat-plates differs from the crinkling ,which occurs in the grooved portions thereof. If desired, the grooves in the throatplate may converge towards their delivery ends, whereby the product will become longitudinally fluted or gathered, aswell as transversel y crinkled.

Other features and advantages will hereinafter appear.

In the accompanying drawings,

Figure 1 is a plan of one form of machine for carrying out the present improvements.

'Figure 2 is a sectional elevation taken at about the line 2-42, Fig. l.

Fig. 3 is a cross-sectional elevation taken at about the line 3 3, Fig. 2.

Fig. 4 is a plan of a machine for producing both transverse crinkles and longitudinal corrugations whereby the paper is narrowed.

Fig. 5 is a `plan of the lower throat-plate at Figs. 4 and 6; or an inverted plan of the upper plate of the pair.

F ig. 6 is a sectional elevation at about the line 6'-6 of Fig. 4.

The paper is led from a supply roll 10, having a weighted brake-strap 11, to a pair of feed-rolls 12, 13, which thrust it into a crinkling throat, comprisingV a pair of opposing plates 14, 15, placed so close together.

that the passage may become choked by the paper thrust thereinto by the rolls. rl`his obstruction preferably occurs near the delivery portion 16 of the throat, so that the portion of paper, which is being advanced between the plates by the feed-rolls, becomes itself transversely crinkled in the act of forcing the obstruction out of the throat. The freshly crinkled portion then itself becomes an obstruction for the next following portion of the paper. As a result,the paper emerges in crinkled form, as at 17, and is carried off by delivery belts'18, 19, and wound up on alroll as at 20. The powerdriven feed-rolls 12, 13, may be smooth, but are preferably knurled or roughened as at 21, 22, so as to bite the paper with sufficient force to drive it into. the crinkling throat. The pressure of the rolls may be regulated by screws 24, which press springs 25 down upon blocks 26, in which the upper roll is journaled.

The crinkling plates 14, 15 are preferably made relatively adjustable one towards and away from the other, to accommodate different kinds of paper, and to regulate the crinkling. The plates should be separated less at the delivery end than at the intake lend of the throat. The adjustment may be effected by pivoting the upper plate at 27, 28 upon 1 the lower ends of pairs of links 29, 30, pivoted upon pairs of eccentric collars 31, said pairs fixed respectively upon'shafts 32. The latter are provided with handles 33, whereby the shafts may be rocked independently of each other, and hence either the intake end or the delivery end of the plate 15 may be raised or lowered, so as to-secure the exact adjustment required for the particular work in hand. Fach shaft may be provided with an index 34, to cooperate with a scale 35 in the adjustment of the shaft. Said shafts 32 may be journaled in side walls 36 connected by a plate 37 forming part of the framework.

To avoid fouling the paper upon the edges of the throat-plates, by reason ofthe narrowness of the intake crevice, each plate at its intake end may be provided with a set ef leaders or guiding tongues 38, 39, preferably integral with the plate, these tongues extending in pairs into peripheral grooyes 40, 41, formed in the rolls., The guiding tongues receive the paper at tac point Vwh re it is held by the rolls, so that the paper is guided safely inte the crinkling throat.

Freferably the throat-plates i groei/ed at 42, so that the tene" forni prolongations of the uncut plates. stiil. remain enoi.

ungrooved portions of the plates to secure such confinement as is necessary to effect the crinkling. The paper is apt to crinkle a little differently in the grooved portions of the plates, as compared with the crinkling in the ungrooved portions of the plates, thus giving a longitudinal fluted effect to the product.

Referring to Figures 4, 5 and 6, the paper may be gathered laterally simultaneously with the creping operation, by making the grooves convergent at their delivery ends, as at 42, 43, Figure 3. The web is reduced in width, as at 44, Fig. 4, the longitudinal fiuting being indicated at 45, and the throatplates being marked 46, 47. The paper is guided into the throat by the tongues 39, and asit arrives at the point where it begins to crepe, it tends to bulge into the grooves, and this tendency is augumented by the convergent dispositions of the grooves, so that longitudinal fluting is effected, to an extent corresponding to the narrowing'of the web at 44, this fluting being effected simultaneously with the transverse creping of the paper. The upper plate 47 may be nicely adjusted, as required in the simultaneous creping and fiuting operation.

It will be perceived that the need of causing' the paper to stick to a crinkling roll is eliminated, since the crinkling is not effected by stripping the paper off from a roll or cylinder, but the paper is driven directly by a pair of rolls into a stationary crinkling throat, and is positively confined throughout the crinkling or fiuting operations. lith many kinds of paper, the operation may be performed while the paper is dry, thus securing elasticity and other desirable qualities. j

rl'he grooving forms each roll into a set of' rolls which may be made parately if desired, or each roll may be made up of a set of rolls secured together'.

Variations may be resorted to within the scope of the invention, and portions of' the improvements may beA used without others.

Having thus described my invention, l claim:

1. The combination with a pair of feedrolls, cf a stationary constricted throat adjacent thereto inte which the paper is thrust and crinkled by said roiis, said 'throat being more ccnstricted at the delivery end than at the intake end, peripheral grooves being formed in said feed-rolls, and guiding tongues extending from 'the throat into the grooves. i

The combination a pair of :feedroils, stationary constricted threat adjacent ther o inte which 'the paper is thrust and crisi i f said rolls, said throat being more ccnstri at'the deiivery end than the intake ei peripheral grooves being in :feed-relis, and guiding Leoise y said tongues integral with the plates.

3. The combination with a pair of feedrolls, of a stationary constricted throat adjacent thereto into which the paper is thrust and crinkled by said rolls, said throat being more eonstricted at the delivery end than at the intake end, peripheral grooves being formed in said feed-rolls, and guiding tongues extending from the throat into the grooves, said throat formed of plates, and

said tongues integral with the plates, said plates having longitudinal grooves.

4. The combination With a pair of feedrolls, of a stationary constricted throat adjacent thereto into which the paper is thrust and erinkled by said rolls, said throat being more constrieted at the delivery end than at the intake end, peripheral grooves being formed in said feed-rolls, and guiding tongues extending from the throat into the grooves, said throat formed of plates, and said tongues integral with the plates, said plates having longitudinal grooves which coincide with thevspaces between the teeth of the guide-tongues.

5. The combination with a pair of feedrolls, of a grooved constricted throat in which the sheet is transversely crinkled and simultaneously fluted longitudinally. A

6. In combination, a pair of plates forminga constricted throat, and means to press paper into said throat to crinkle it, said plates provided with means for longitudinally fiuting the paper and simultaneously crinkling it transversely.

7. A crinkling apparatus 'comprising two members forming a constrieted throat, and means driving the paper into the throat, one of said members having grooves for longitudinally fluting the paper simultaneously with the crinkling thereof.

8. A crinkling apparatus comprising two members forming a constricted throat, and means driving the paper into the throat, each of said members having grooves for longitudinally fluting the paper simultaneously with the crinkling' thereof, said grooves converging towards the delivery end of the throat.

9. In combination, a pair of plates forming a constricted throat, and means to press paper into said throat to crinkle it, each of' said plates being grooved in the direction Vof travel of the paper, the grooves on one plate opposing those on the4 other.

10. The combination with a pair of power-driven feed-rolls having peripheral grooves, of stationary guiding tongues eX- tending Within said grooves, said tongues prolonged to form sets of bars making a eonstricted throat into which the paper isv thrust by said rolls and erinkled.

11. The combination with a pair of power-driven feed-rolls having peripheral grooves, of stationary guiding tongues eX- tending Within said grooves, said tongues prolonged to form sets of bars making a constricted throat into which the paper is thrust by said rolls and crinkled, and a plate or Web uniting the bars in each set.

12. The combination with a pair of power-driven feed-rolls having peripheral grooves, of stationary guiding tongues extending within said grooves, said tongues prolonged to form sets of bars making a constricted throat into which the paper is thrust by said rolls and crinkled, one' of said sets being mounted for adjustment at either end toward and away from the other set.

13. The combination with a pair of feed-rolls, of a ,pair of plates forming a stationary constricted throat into which the paper is thrust and crinkled by said rolls, links supporting one of said plates, andad- Mjustable eccentrics upon which said links are carried.

14. A crinkling apparatus comprising two members forming a eonstricted throat, sets of guiding tongues to receive the paper, and means driving the paper into the throat,` one of said members having grooves for longitudinally fiuting the paper simultaneously With the crinkling thereof, said grooves converging from said tongues to the delivery end of the throat.

15.` A crinkling apparatus Comprising two members forminga constricted throat, sets Vof guiding tongues to receive the paper, Aand means driving the paper into the throat, one of said members having grooves for longitudinally iiuting the paper simultaneously with the crinkling thereof.

WILLIAM A. LORENZ. 

